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torchmdnet coulomb_cutoff only if periodic#138

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sef43 wants to merge 1 commit intoopenmm:mainfrom
sef43:fix_137
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torchmdnet coulomb_cutoff only if periodic#138
sef43 wants to merge 1 commit intoopenmm:mainfrom
sef43:fix_137

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@sef43
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@sef43 sef43 commented Apr 8, 2026

fixes #137

For in-vacuum energy evaluations we do not want to use a coulomb cutoff as it introduces errors from the reaction field approximation it uses.

Probably also for mechanical embedding small molecule mixed systems we also do not want to use the coulomb cutoff. This does not yet address that so is still a draft.

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Just checking in on the status of this. We're likely to do a 1.6.1 patch in the near future. It would be great if this fix could be included.

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Different AceFF Relative Energies with torchmd-net 2 / openmmml 1.5 and torchmd-net 3 / openmmml 1.6

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